How to make a blast plan in Crosscut

Describe the block, then show in the 3D view where the grid starts and where its rows go. The layout is drawn on the model before any hole is created.

1. Choose the block’s contour: a line, a wireframe or another object.
2. Choose the layout: a grid in the contour, along a line or between two lines.
3. Set the spacing, diameter, depth and subdrill.
4. Show the grid’s start and the direction of its rows.

Result: one blast block with all its holes.

A charge template says what a charge is made of. A rule says which holes get it, by conditions on the holes’ own fields.

1. Select the blocks to charge.
2. Describe the templates: stemming, explosive and air, from the collar down.
3. Set the rules and their conditions.
4. Calculate the charges, check the table and save.

Result: the charges go into the holes only after you have checked them in the table.

Which hole fires after which. Non-electric, with surface connectors between the holes (row by row, diagonal or cut), or electronic, with each detonator programmed to its own delay.

1. Select a block with at least two holes.
2. Choose the initiation system.
3. Set the pattern and the connectors: the view and the summary follow each change.
4. Lay out the network.

Result: a firing time for every hole; the summary gives the blast’s duration and the largest mass in 8 ms.

Two danger zones, for people and for machines, by one of three methods: McKenzie (ISEE), the CIS safety rules or Lundborg. The zones are drawn over the model while the form is open.

1. Select one block with holes.
2. Choose the method and check the values taken from the block.
3. Set the safety factors for people and machines.
4. Build the zones as polylines or open the printable sheet.

Result: the danger distances; nothing enters the project until you build the zones.

Shows every row of the block side by side at true elevations: each hole with its geology and its charge, water and the bench floor. The rock and the charge can be compared hole by hole.

1. Select one block with holes.
2. Open the row section: the rows are listed on the left.
3. Choose a row to see it in section; the line below says which row it is and how many holes it has.
4. Tick the rows you need and print them.

Result: a section of each row with charge and geology, and a landscape sheet for each ticked row.